1 files changed, 200 insertions, 25 deletions

diff --git a/drivers/net/ethernet/netronome/nfp/flower/action.c b/drivers/net/ethernet/netronome/nfp/flower/action.c
index 5a54fe848de4..c06600fb47ff 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/action.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/action.c
@@ -2,10 +2,12 @@
 /* Copyright (C) 2017-2018 Netronome Systems, Inc. */
 
 #include <linux/bitfield.h>
+#include <linux/mpls.h>
 #include <net/pkt_cls.h>
 #include <net/tc_act/tc_csum.h>
 #include <net/tc_act/tc_gact.h>
 #include <net/tc_act/tc_mirred.h>
+#include <net/tc_act/tc_mpls.h>
 #include <net/tc_act/tc_pedit.h>
 #include <net/tc_act/tc_vlan.h>
 #include <net/tc_act/tc_tunnel_key.h>
@@ -20,11 +22,86 @@
 #define NFP_FL_TUNNEL_CSUM			cpu_to_be16(0x01)
 #define NFP_FL_TUNNEL_KEY			cpu_to_be16(0x04)
 #define NFP_FL_TUNNEL_GENEVE_OPT		cpu_to_be16(0x0800)
-#define NFP_FL_SUPPORTED_TUNNEL_INFO_FLAGS	IP_TUNNEL_INFO_TX
-#define NFP_FL_SUPPORTED_IPV4_UDP_TUN_FLAGS	(NFP_FL_TUNNEL_CSUM | \
+#define NFP_FL_SUPPORTED_TUNNEL_INFO_FLAGS	(IP_TUNNEL_INFO_TX | \
+						 IP_TUNNEL_INFO_IPV6)
+#define NFP_FL_SUPPORTED_UDP_TUN_FLAGS		(NFP_FL_TUNNEL_CSUM | \
 						 NFP_FL_TUNNEL_KEY | \
 						 NFP_FL_TUNNEL_GENEVE_OPT)
 
+static int
+nfp_fl_push_mpls(struct nfp_fl_push_mpls *push_mpls,
+		 const struct flow_action_entry *act,
+		 struct netlink_ext_ack *extack)
+{
+	size_t act_size = sizeof(struct nfp_fl_push_mpls);
+	u32 mpls_lse = 0;
+
+	push_mpls->head.jump_id = NFP_FL_ACTION_OPCODE_PUSH_MPLS;
+	push_mpls->head.len_lw = act_size >> NFP_FL_LW_SIZ;
+
+	/* BOS is optional in the TC action but required for offload. */
+	if (act->mpls_push.bos != ACT_MPLS_BOS_NOT_SET) {
+		mpls_lse |= act->mpls_push.bos << MPLS_LS_S_SHIFT;
+	} else {
+		NL_SET_ERR_MSG_MOD(extack, "unsupported offload: BOS field must explicitly be set for MPLS push");
+		return -EOPNOTSUPP;
+	}
+
+	/* Leave MPLS TC as a default value of 0 if not explicitly set. */
+	if (act->mpls_push.tc != ACT_MPLS_TC_NOT_SET)
+		mpls_lse |= act->mpls_push.tc << MPLS_LS_TC_SHIFT;
+
+	/* Proto, label and TTL are enforced and verified for MPLS push. */
+	mpls_lse |= act->mpls_push.label << MPLS_LS_LABEL_SHIFT;
+	mpls_lse |= act->mpls_push.ttl << MPLS_LS_TTL_SHIFT;
+	push_mpls->ethtype = act->mpls_push.proto;
+	push_mpls->lse = cpu_to_be32(mpls_lse);
+
+	return 0;
+}
+
+static void
+nfp_fl_pop_mpls(struct nfp_fl_pop_mpls *pop_mpls,
+		const struct flow_action_entry *act)
+{
+	size_t act_size = sizeof(struct nfp_fl_pop_mpls);
+
+	pop_mpls->head.jump_id = NFP_FL_ACTION_OPCODE_POP_MPLS;
+	pop_mpls->head.len_lw = act_size >> NFP_FL_LW_SIZ;
+	pop_mpls->ethtype = act->mpls_pop.proto;
+}
+
+static void
+nfp_fl_set_mpls(struct nfp_fl_set_mpls *set_mpls,
+		const struct flow_action_entry *act)
+{
+	size_t act_size = sizeof(struct nfp_fl_set_mpls);
+	u32 mpls_lse = 0, mpls_mask = 0;
+
+	set_mpls->head.jump_id = NFP_FL_ACTION_OPCODE_SET_MPLS;
+	set_mpls->head.len_lw = act_size >> NFP_FL_LW_SIZ;
+
+	if (act->mpls_mangle.label != ACT_MPLS_LABEL_NOT_SET) {
+		mpls_lse |= act->mpls_mangle.label << MPLS_LS_LABEL_SHIFT;
+		mpls_mask |= MPLS_LS_LABEL_MASK;
+	}
+	if (act->mpls_mangle.tc != ACT_MPLS_TC_NOT_SET) {
+		mpls_lse |= act->mpls_mangle.tc << MPLS_LS_TC_SHIFT;
+		mpls_mask |= MPLS_LS_TC_MASK;
+	}
+	if (act->mpls_mangle.bos != ACT_MPLS_BOS_NOT_SET) {
+		mpls_lse |= act->mpls_mangle.bos << MPLS_LS_S_SHIFT;
+		mpls_mask |= MPLS_LS_S_MASK;
+	}
+	if (act->mpls_mangle.ttl) {
+		mpls_lse |= act->mpls_mangle.ttl << MPLS_LS_TTL_SHIFT;
+		mpls_mask |= MPLS_LS_TTL_MASK;
+	}
+
+	set_mpls->lse = cpu_to_be32(mpls_lse);
+	set_mpls->lse_mask = cpu_to_be32(mpls_mask);
+}
+
 static void nfp_fl_pop_vlan(struct nfp_fl_pop_vlan *pop_vlan)
 {
 	size_t act_size = sizeof(struct nfp_fl_pop_vlan);
@@ -97,7 +174,7 @@ nfp_fl_output(struct nfp_app *app, struct nfp_fl_output *output,
 	      struct nfp_fl_payload *nfp_flow,
 	      bool last, struct net_device *in_dev,
 	      enum nfp_flower_tun_type tun_type, int *tun_out_cnt,
-	      struct netlink_ext_ack *extack)
+	      bool pkt_host, struct netlink_ext_ack *extack)
 {
 	size_t act_size = sizeof(struct nfp_fl_output);
 	struct nfp_flower_priv *priv = app->priv;
@@ -142,6 +219,20 @@ nfp_fl_output(struct nfp_app *app, struct nfp_fl_output *output,
 			return gid;
 		}
 		output->port = cpu_to_be32(NFP_FL_LAG_OUT | gid);
+	} else if (nfp_flower_internal_port_can_offload(app, out_dev)) {
+		if (!(priv->flower_ext_feats & NFP_FL_FEATS_PRE_TUN_RULES)) {
+			NL_SET_ERR_MSG_MOD(extack, "unsupported offload: pre-tunnel rules not supported in loaded firmware");
+			return -EOPNOTSUPP;
+		}
+
+		if (nfp_flow->pre_tun_rule.dev || !pkt_host) {
+			NL_SET_ERR_MSG_MOD(extack, "unsupported offload: pre-tunnel rules require single egress dev and ptype HOST action");
+			return -EOPNOTSUPP;
+		}
+
+		nfp_flow->pre_tun_rule.dev = out_dev;
+
+		return 0;
 	} else {
 		/* Set action output parameters. */
 		output->flags = cpu_to_be16(tmp_flags);
@@ -304,19 +395,26 @@ nfp_fl_push_geneve_options(struct nfp_fl_payload *nfp_fl, int *list_len,
 }
 
 static int
-nfp_fl_set_ipv4_tun(struct nfp_app *app, struct nfp_fl_set_ipv4_tun *set_tun,
-		    const struct flow_action_entry *act,
-		    struct nfp_fl_pre_tunnel *pre_tun,
-		    enum nfp_flower_tun_type tun_type,
-		    struct net_device *netdev, struct netlink_ext_ack *extack)
+nfp_fl_set_tun(struct nfp_app *app, struct nfp_fl_set_tun *set_tun,
+	       const struct flow_action_entry *act,
+	       struct nfp_fl_pre_tunnel *pre_tun,
+	       enum nfp_flower_tun_type tun_type,
+	       struct net_device *netdev, struct netlink_ext_ack *extack)
 {
-	size_t act_size = sizeof(struct nfp_fl_set_ipv4_tun);
 	const struct ip_tunnel_info *ip_tun = act->tunnel;
+	bool ipv6 = ip_tunnel_info_af(ip_tun) == AF_INET6;
+	size_t act_size = sizeof(struct nfp_fl_set_tun);
 	struct nfp_flower_priv *priv = app->priv;
 	u32 tmp_set_ip_tun_type_index = 0;
 	/* Currently support one pre-tunnel so index is always 0. */
 	int pretun_idx = 0;
 
+	if (!IS_ENABLED(CONFIG_IPV6) && ipv6)
+		return -EOPNOTSUPP;
+
+	if (ipv6 && !(priv->flower_ext_feats & NFP_FL_FEATS_IPV6_TUN))
+		return -EOPNOTSUPP;
+
 	BUILD_BUG_ON(NFP_FL_TUNNEL_CSUM != TUNNEL_CSUM ||
 		     NFP_FL_TUNNEL_KEY	!= TUNNEL_KEY ||
 		     NFP_FL_TUNNEL_GENEVE_OPT != TUNNEL_GENEVE_OPT);
@@ -327,19 +425,35 @@ nfp_fl_set_ipv4_tun(struct nfp_app *app, struct nfp_fl_set_ipv4_tun *set_tun,
 		return -EOPNOTSUPP;
 	}
 
-	set_tun->head.jump_id = NFP_FL_ACTION_OPCODE_SET_IPV4_TUNNEL;
+	set_tun->head.jump_id = NFP_FL_ACTION_OPCODE_SET_TUNNEL;
 	set_tun->head.len_lw = act_size >> NFP_FL_LW_SIZ;
 
 	/* Set tunnel type and pre-tunnel index. */
 	tmp_set_ip_tun_type_index |=
-		FIELD_PREP(NFP_FL_IPV4_TUNNEL_TYPE, tun_type) |
-		FIELD_PREP(NFP_FL_IPV4_PRE_TUN_INDEX, pretun_idx);
+		FIELD_PREP(NFP_FL_TUNNEL_TYPE, tun_type) |
+		FIELD_PREP(NFP_FL_PRE_TUN_INDEX, pretun_idx);
 
 	set_tun->tun_type_index = cpu_to_be32(tmp_set_ip_tun_type_index);
 	set_tun->tun_id = ip_tun->key.tun_id;
 
 	if (ip_tun->key.ttl) {
 		set_tun->ttl = ip_tun->key.ttl;
+#ifdef CONFIG_IPV6
+	} else if (ipv6) {
+		struct net *net = dev_net(netdev);
+		struct flowi6 flow = {};
+		struct dst_entry *dst;
+
+		flow.daddr = ip_tun->key.u.ipv6.dst;
+		flow.flowi4_proto = IPPROTO_UDP;
+		dst = ipv6_stub->ipv6_dst_lookup_flow(net, NULL, &flow, NULL);
+		if (!IS_ERR(dst)) {
+			set_tun->ttl = ip6_dst_hoplimit(dst);
+			dst_release(dst);
+		} else {
+			set_tun->ttl = net->ipv6.devconf_all->hop_limit;
+		}
+#endif
 	} else {
 		struct net *net = dev_net(netdev);
 		struct flowi4 flow = {};
@@ -365,7 +479,7 @@ nfp_fl_set_ipv4_tun(struct nfp_app *app, struct nfp_fl_set_ipv4_tun *set_tun,
 	set_tun->tos = ip_tun->key.tos;
 
 	if (!(ip_tun->key.tun_flags & NFP_FL_TUNNEL_KEY) ||
-	    ip_tun->key.tun_flags & ~NFP_FL_SUPPORTED_IPV4_UDP_TUN_FLAGS) {
+	    ip_tun->key.tun_flags & ~NFP_FL_SUPPORTED_UDP_TUN_FLAGS) {
 		NL_SET_ERR_MSG_MOD(extack, "unsupported offload: loaded firmware does not support tunnel flag offload");
 		return -EOPNOTSUPP;
 	}
@@ -377,7 +491,12 @@ nfp_fl_set_ipv4_tun(struct nfp_app *app, struct nfp_fl_set_ipv4_tun *set_tun,
 	}
 
 	/* Complete pre_tunnel action. */
-	pre_tun->ipv4_dst = ip_tun->key.u.ipv4.dst;
+	if (ipv6) {
+		pre_tun->flags |= cpu_to_be16(NFP_FL_PRE_TUN_IPV6);
+		pre_tun->ipv6_dst = ip_tun->key.u.ipv6.dst;
+	} else {
+		pre_tun->ipv4_dst = ip_tun->key.u.ipv4.dst;
+	}
 
 	return 0;
 }
@@ -809,7 +928,7 @@ nfp_flower_output_action(struct nfp_app *app,
 			 struct nfp_fl_payload *nfp_fl, int *a_len,
 			 struct net_device *netdev, bool last,
 			 enum nfp_flower_tun_type *tun_type, int *tun_out_cnt,
-			 int *out_cnt, u32 *csum_updated,
+			 int *out_cnt, u32 *csum_updated, bool pkt_host,
 			 struct netlink_ext_ack *extack)
 {
 	struct nfp_flower_priv *priv = app->priv;
@@ -831,7 +950,7 @@ nfp_flower_output_action(struct nfp_app *app,
 
 	output = (struct nfp_fl_output *)&nfp_fl->action_data[*a_len];
 	err = nfp_fl_output(app, output, act, nfp_fl, last, netdev, *tun_type,
-			    tun_out_cnt, extack);
+			    tun_out_cnt, pkt_host, extack);
 	if (err)
 		return err;
 
@@ -863,30 +982,37 @@ nfp_flower_loop_action(struct nfp_app *app, const struct flow_action_entry *act,
 		       struct net_device *netdev,
 		       enum nfp_flower_tun_type *tun_type, int *tun_out_cnt,
 		       int *out_cnt, u32 *csum_updated,
-		       struct nfp_flower_pedit_acts *set_act,
+		       struct nfp_flower_pedit_acts *set_act, bool *pkt_host,
 		       struct netlink_ext_ack *extack, int act_idx)
 {
-	struct nfp_fl_set_ipv4_tun *set_tun;
 	struct nfp_fl_pre_tunnel *pre_tun;
+	struct nfp_fl_set_tun *set_tun;
 	struct nfp_fl_push_vlan *psh_v;
+	struct nfp_fl_push_mpls *psh_m;
 	struct nfp_fl_pop_vlan *pop_v;
+	struct nfp_fl_pop_mpls *pop_m;
+	struct nfp_fl_set_mpls *set_m;
 	int err;
 
 	switch (act->id) {
 	case FLOW_ACTION_DROP:
 		nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_DROP);
 		break;
+	case FLOW_ACTION_REDIRECT_INGRESS:
 	case FLOW_ACTION_REDIRECT:
 		err = nfp_flower_output_action(app, act, nfp_fl, a_len, netdev,
 					       true, tun_type, tun_out_cnt,
-					       out_cnt, csum_updated, extack);
+					       out_cnt, csum_updated, *pkt_host,
+					       extack);
 		if (err)
 			return err;
 		break;
+	case FLOW_ACTION_MIRRED_INGRESS:
 	case FLOW_ACTION_MIRRED:
 		err = nfp_flower_output_action(app, act, nfp_fl, a_len, netdev,
 					       false, tun_type, tun_out_cnt,
-					       out_cnt, csum_updated, extack);
+					       out_cnt, csum_updated, *pkt_host,
+					       extack);
 		if (err)
 			return err;
 		break;
@@ -935,7 +1061,7 @@ nfp_flower_loop_action(struct nfp_app *app, const struct flow_action_entry *act,
 		 * If none, the packet falls back before applying other actions.
 		 */
 		if (*a_len + sizeof(struct nfp_fl_pre_tunnel) +
-		    sizeof(struct nfp_fl_set_ipv4_tun) > NFP_FL_MAX_A_SIZ) {
+		    sizeof(struct nfp_fl_set_tun) > NFP_FL_MAX_A_SIZ) {
 			NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at tunnel encap");
 			return -EOPNOTSUPP;
 		}
@@ -949,11 +1075,11 @@ nfp_flower_loop_action(struct nfp_app *app, const struct flow_action_entry *act,
 			return err;
 
 		set_tun = (void *)&nfp_fl->action_data[*a_len];
-		err = nfp_fl_set_ipv4_tun(app, set_tun, act, pre_tun,
-					  *tun_type, netdev, extack);
+		err = nfp_fl_set_tun(app, set_tun, act, pre_tun, *tun_type,
+				     netdev, extack);
 		if (err)
 			return err;
-		*a_len += sizeof(struct nfp_fl_set_ipv4_tun);
+		*a_len += sizeof(struct nfp_fl_set_tun);
 		}
 		break;
 	case FLOW_ACTION_TUNNEL_DECAP:
@@ -975,6 +1101,54 @@ nfp_flower_loop_action(struct nfp_app *app, const struct flow_action_entry *act,
 		 */
 		*csum_updated &= ~act->csum_flags;
 		break;
+	case FLOW_ACTION_MPLS_PUSH:
+		if (*a_len +
+		    sizeof(struct nfp_fl_push_mpls) > NFP_FL_MAX_A_SIZ) {
+			NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at push MPLS");
+			return -EOPNOTSUPP;
+		}
+
+		psh_m = (struct nfp_fl_push_mpls *)&nfp_fl->action_data[*a_len];
+		nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL);
+
+		err = nfp_fl_push_mpls(psh_m, act, extack);
+		if (err)
+			return err;
+		*a_len += sizeof(struct nfp_fl_push_mpls);
+		break;
+	case FLOW_ACTION_MPLS_POP:
+		if (*a_len +
+		    sizeof(struct nfp_fl_pop_mpls) > NFP_FL_MAX_A_SIZ) {
+			NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at pop MPLS");
+			return -EOPNOTSUPP;
+		}
+
+		pop_m = (struct nfp_fl_pop_mpls *)&nfp_fl->action_data[*a_len];
+		nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL);
+
+		nfp_fl_pop_mpls(pop_m, act);
+		*a_len += sizeof(struct nfp_fl_pop_mpls);
+		break;
+	case FLOW_ACTION_MPLS_MANGLE:
+		if (*a_len +
+		    sizeof(struct nfp_fl_set_mpls) > NFP_FL_MAX_A_SIZ) {
+			NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at set MPLS");
+			return -EOPNOTSUPP;
+		}
+
+		set_m = (struct nfp_fl_set_mpls *)&nfp_fl->action_data[*a_len];
+		nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL);
+
+		nfp_fl_set_mpls(set_m, act);
+		*a_len += sizeof(struct nfp_fl_set_mpls);
+		break;
+	case FLOW_ACTION_PTYPE:
+		/* TC ptype skbedit sets PACKET_HOST for ingress redirect. */
+		if (act->ptype != PACKET_HOST)
+			return -EOPNOTSUPP;
+
+		*pkt_host = true;
+		break;
 	default:
 		/* Currently we do not handle any other actions. */
 		NL_SET_ERR_MSG_MOD(extack, "unsupported offload: unsupported action in action list");
@@ -1030,6 +1204,7 @@ int nfp_flower_compile_action(struct nfp_app *app,
 	struct nfp_flower_pedit_acts set_act;
 	enum nfp_flower_tun_type tun_type;
 	struct flow_action_entry *act;
+	bool pkt_host = false;
 	u32 csum_updated = 0;
 
 	memset(nfp_flow->action_data, 0, NFP_FL_MAX_A_SIZ);
@@ -1046,7 +1221,7 @@ int nfp_flower_compile_action(struct nfp_app *app,
 		err = nfp_flower_loop_action(app, act, flow, nfp_flow, &act_len,
 					     netdev, &tun_type, &tun_out_cnt,
 					     &out_cnt, &csum_updated,
-					     &set_act, extack, i);
+					     &set_act, &pkt_host, extack, i);
 		if (err)
 			return err;
 		act_cnt++;